<template>
  <div class="app-container">
    <doc-alert title="上传下载" url="https://doc.iocoder.cn/file/" />
    <!-- 搜索工作栏 -->
    <el-form
      v-show="showSearch"
      ref="queryForm"
      :model="queryParams"
      size="small"
      :inline="true"
      label-width="68px"
    >
      <el-form-item label="文件路径" prop="path">
        <el-input
          v-model="queryParams.path"
          placeholder="请输入文件路径"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="创建时间">
        <el-date-picker
          v-model="dateRangeCreateTime"
          style="width: 240px"
          value-format="yyyy-MM-dd"
          type="daterange"
          range-separator="-"
          start-placeholder="开始日期"
          end-placeholder="结束日期"
        />
      </el-form-item>
      <el-form-item>
        <el-button
          type="primary"
          icon="el-icon-search"
          @click="handleQuery"
        >搜索</el-button>
        <el-button icon="el-icon-refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <!-- 操作工具栏 -->
    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
        >上传文件</el-button>
      </el-col>
      <right-toolbar
        :show-search.sync="showSearch"
        @queryTable="getList"
      />
    </el-row>

    <!-- 列表 -->
    <el-table v-loading="loading" :data="list">
      <el-table-column label="文件名" align="center" prop="path" />
      <el-table-column label="URL" align="center" prop="url" />
      <el-table-column
        label="文件大小"
        align="center"
        prop="size"
        width="120"
        :formatter="sizeFormat"
      />
      <el-table-column label="文件类型" align="center" prop="type" width="80" />
      <!--      <el-table-column label="文件内容" align="center" prop="content">-->
      <!--        <template slot-scope="scope">-->
      <!--          <img v-if="scope.row.type === 'jpg' || scope.row.type === 'png' || scope.row.type === 'gif'"-->
      <!--               width="200px" :src="getFileUrl + scope.row.id">-->
      <!--          <i v-else>非图片，无法预览</i>-->
      <!--        </template>-->
      <!--      </el-table-column>-->
      <el-table-column
        label="上传时间"
        align="center"
        prop="createTime"
        width="180"
      >
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column
        label="操作"
        align="center"
        class-name="small-padding fixed-width"
        width="100"
      >
        <template slot-scope="scope">
          <el-button
            v-hasPermi="['infra:file:delete']"
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页组件 -->
    <pagination
      v-show="total > 0"
      :total="total"
      :page.sync="queryParams.pageNo"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 对话框(添加 / 修改) -->
    <el-dialog
      :title="upload.title"
      :visible.sync="upload.open"
      width="400px"
      append-to-body
    >
      <el-upload
        ref="upload"
        :auto-upload="false"
        drag
        :limit="1"
        :headers="upload.headers"
        :action="upload.url"
        :data="upload.data"
        :disabled="upload.isUploading"
        :on-change="handleFileChange"
        :before-upload="handleBeforeUpload"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :on-error="handleUploadError"
      >
        <i class="el-icon-upload" />
        <div class="el-upload__text">将文件拖到此处，或 <em>点击上传</em></div>
        <div slot="tip" class="el-upload__tip" style="color: red">
          提示：仅允许导入图片（jpg、png、gif 格式）、视频文件！
        </div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">确 定</el-button>
        <el-button @click="upload.open = false">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { deleteFile, getFilePage } from '@/api/infra/file'
import { getToken } from '@/utils/auth'

export default {
  name: 'File',
  data() {
    return {
      baseUrl: process.env.VUE_APP_BASE_API,
      getFileUrl: process.env.VUE_APP_BASE_API + 'admin-api/infra/file/get/',
      // 遮罩层
      loading: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 文件列表
      list: [],
      // 弹出层标题
      title: '',
      dateRangeCreateTime: [],
      // 查询参数
      queryParams: {
        pageNo: 1,
        pageSize: 10,
        path: null,
        type: null
      },
      // 用户导入参数
      upload: {
        open: false, // 是否显示弹出层
        title: '', // 弹出层标题
        isUploading: false, // 是否禁用上传
        url: `${process.env.VUE_APP_BASE_API + (process.env.NODE_ENV === 'development' ? 'admin-api-test/' : 'admin-api/')}infra/file/upload`, // 请求地址
        headers: { Authorization: 'Bearer ' + getToken() }, // 设置上传的请求头部
        data: {} // 上传的额外数据
      },
      // 最大图片尺寸 M
      fileSize: 1.5,
      fileType: ['png', 'jpg', 'jpeg']
    }
  },
  created() {
    this.getList()
  },
  methods: {
    // 文件个数超出
    handleExceed() {
      this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`)
    },
    // 上传失败
    handleUploadError(err, file, fileList) {
      this.upload.isUploading = false // 禁止修改
      this.$modal.msgError('上传图片失败，请重试')
      this.$modal.closeLoading()
    },
    // 上传处理
    handleBeforeUpload(file) {
      // if (
      //   file.type.indexOf('image') === -1 &&
      //   file.type.indexOf('video') === -1
      // ) {
      //   this.$modal.msgError('请上传图片、视频文件')
      //   return false
      // }
      let isImg = false
      let isVideo = false
      if (this.fileType.length) {
        let fileExtension = ''
        if (file.name.lastIndexOf('.') > -1) {
          fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
        }
        isImg = this.fileType.some((type) => {
          if (file.type.indexOf(type) > -1) return true
          if (fileExtension && fileExtension.indexOf(type) > -1) return true
          return false
        })
      } else {
        isImg = file.type.indexOf('image') > -1
      }
      isVideo = file.type.indexOf('video') > -1
      if (isImg && this.fileSize) {
        const isLt = file.size / 1024 / 1024 < this.fileSize
        if (!isLt) {
          this.$modal.msgError(`上传图片大小不能超过 ${this.fileSize} MB!`)
          return false
        }
      }
      if (isVideo) {
        // 限制500M
        const isLt = file.size / 1024 / 1024 < 500
        if (!isLt) {
          this.$modal.msgError(`上传视频大小不能超过500MB!`)
          return false
        }
      }
      this.$modal.loading('正在上传，请稍候...')
    },
    /** 查询列表 */
    getList() {
      this.loading = true
      // 处理查询参数
      const params = { ...this.queryParams }
      this.addBeginAndEndTime(params, this.dateRangeCreateTime, 'createTime')
      // 执行查询
      getFilePage(params).then((response) => {
        this.list = response.data.list
        this.total = response.data.total
        this.loading = false
      })
    },
    /** 取消按钮 */
    cancel() {
      this.open = false
      this.reset()
    },
    /** 表单重置 */
    reset() {
      this.form = {
        content: undefined
      }
      this.resetForm('form')
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNo = 1
      this.getList()
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.dateRangeCreateTime = []
      this.resetForm('queryForm')
      this.handleQuery()
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.upload.open = true
      this.upload.title = '上传文件'
    },
    /** 处理上传的文件发生变化 */
    handleFileChange(file, fileList) {
      this.upload.data.path = file.name
    },
    /** 处理文件上传中 */
    handleFileUploadProgress(event, file, fileList) {
      this.upload.isUploading = true // 禁止修改
    },
    /** 发起文件上传 */
    submitFileForm() {
      this.$refs.upload.submit()
    },
    /** 文件上传成功处理 */
    handleFileSuccess(response, file, fileList) {
      this.$refs.upload.clearFiles()
      // 清理
      this.upload.open = false
      this.upload.isUploading = false
      // 提示成功，并刷新
      this.$modal.msgSuccess('上传成功')
      this.$modal.closeLoading()
      this.getList()
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const id = row.id
      this.$modal
        .confirm('是否确认删除文件编号为"' + id + '"的数据项?')
        .then(function() {
          return deleteFile(id)
        })
        .then(() => {
          this.getList()
          this.$modal.msgSuccess('删除成功')
        })
        .catch(() => {})
    },
    // 用户昵称展示
    sizeFormat(row, column) {
      const unitArr = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
      const srcSize = parseFloat(row.size)
      const index = Math.floor(Math.log(srcSize) / Math.log(1024))
      let size = srcSize / Math.pow(1024, index)
      size = size.toFixed(2) // 保留的小数位数
      return size + ' ' + unitArr[index]
    }
  }
}
</script>
